Check your spare .....

Got a flat, no air in my spare, I never checked it when I bought my truck...

 

Ugghhhh.....that happened to me once.....

 

thats another thing, if you ever change wheels and tires, thats a good time to put one of the old tires in as the spare if you have decent tread left. Also, check the tire pressure every other oil change. I do and its good to know that safe clear wont have their hands on my truck if anything goes wrong.